WEBVTT tate this afternoon. By late afternoon, the main area of rain was along a line of storms from northeast Iowa into the southwest counties. The strongest storms were north, between highway 3 and highway 20. High temperatures were in the middle and upper 70s northwest to the upper 80s and lower 90s south. Heat indices were in the 80s northwest to over 100 south. Northwest Iowa had northwest winds with the winds southerly across the south. A frontal boundary stretched from the western Great Lakes into northwest Iowa and western Kansas this afternoon. Showers and storms will develop along this boundary tonight. A few severe storms are possible, mainly over northeast Iowa into southern Minnesota and Wisconsin. Cooler temperatures will filter into the state by Friday and last through the weekend. Additional thunderstorm chances are forecast over southern Iowa and northern Missouri on Saturday and then across much of the state on Sunday into Sunday night. Tonight Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 68. Southwest wind 5 to 8 mph becoming north after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. Friday A 10 percent chance of showers and thunderstorms before 7am. Partly sunny, with a high near 81. North wind 6 to 8 mph. Friday Night Mostly cloudy, with a low around 63. North wind 3 to 5 mph. Saturday A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. North wind 3 to 5 mph. Saturday Night A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Sundayrs and thunderstorms. Mostly cl9. Sunday Night A 40 percent ctorms. Mostly cloudy, with a lot chance of shooudy, with a high near 81. Monday Night A 30 phowers and thunder 71. Tuesday Mostly sunny, with a high neaPartly cloudy, of showers and thunderstorms. Mostly sunny, wr 89.